Subaru and Roman Space Telescope Goal: l share Roman status l share Synergistic observation status l Discussion • Compatibility with PFS SSP after 2027 • Balance of Dark/Bright night • Front-loading • Expanding Keck exchange time?
Takahiro Sumi (Osaka U.) and JAXA Roman team 2021/3/5, Subaru Users Meeting FY2020 @online Nancy Grace Roman Space Telescope (May 2020 NASA renamed from WFIRST)
Nancy G. Roman became NASA's first Chief of Astronomy in1959. known as the "Mother of Hubble" for her foundational role in planning the Hubble Space Telescope. Roman Space Telescope
Solar Array Diameter: 2.4m Wavelength: λ=0.6-2.3μm Outer Barrel 2 Assembly Wide Field Inst. (WFI) (FOV：0.281deg. ) (OBA) Coronagraph Inst. (CGI)（tech demo）
Sunshade Orbit: L2 Spacecraft Bus Mission life time: 5.3 years: 10years goal CGI WFI Serviceable Science (observation time): l Dark Energy/Modified Gravity(〜2.5yr) • High Latitude Survey (HLS)（galaxy distribution） • IaSNe survey l Exoplanets： • Microlensing exoplanet search (〜1.2yr) • Direct observation by coronagraph(〜0.3yr) l Guest Observer（25%,1.5yr） Roman Space Telescope Status l Advanced to phase C in Feb. 2020 l Mission Critical Design Review in Sept 2021 l Flight hardware - Telescope (L3Harris): Primary and secondary mirrors have been refigured, polished and coated; - Coronagraph relay optics polished and coated - Wide Field Instrument (GSFC/Ball) - Passed WFI CDR - Completed installation and alignment of all 18 engineering test unit (ETU) sensor chip assemblies (SCA) on the ETU mosaic plate - 17 out of 18 flight candidates SCAs in hand - Added new F213 filter (1.95-2.3) micron – now have imagining filter covering entire spectral range supported by mirrors/detectors
2021/3/5, Subaru Users Meeting FY2020 @online Roman Space Telescope Status Added new F213 filter (1.95-2.3) micron
2021/3/5, Subaru Users Meeting FY2020 @online Roman Space Telescope Status l Coronagraph (JPL) - Deformable mirror technology has been demonstrated - Two flight actuators in hand - CGI CDR April 2021 l Spacecraft (GSFC) - Procurement of flight subsystems well underway - Mechanical Hardware Engineering Development Units (EDUs) nearly complete l Ground system CDR July 2021 l On track for launch in mid 2020’s
2021/3/5, Subaru Users Meeting FY2020 @online Subaru-Roman Synergistic Observations Workshop IV Plan Synergistic observation utilizing the 100 nights of Subaru to enhance Roman science and enable new, joint science projects.
Subaru-Roman Synergistic observation Steering Group: Toru Yamada (JAXA Roman Representative) Chair Takahiro Sumi (PI of the JAXA Roman study team) Yusei Koyama (Subaru Telescope Representative) Tadayuki Kodama (Liaison to the Subaru SAC) David Spergel (Roman WFI Adjutant Scientist) Julie McEnery (Roman Project Scientist) Jason Rhodes (Roman Deputy Project Scientist) Alice Shapley (RSIG representative) SOC: Daisuke Suzuki (Osaka U.) 2021/2/17–18, Subaru-Roman Synergistic Observations Workshop IV@online Synergy of Wide Field View (Credit: NAOJ)
1.5degree diameter
Roman WFI 0.28deg2
Roman’s wide-band imaging has good synergy with Subaru’s multi-band capability. Japanese Contribution “Package” for Roman
■ JAXA Roman-J team (Team leader: T.Yamada, PI：Sumi） 1. Subaru-Roman Synergy Survey (100nights from 2025) 1. photo-z calibration (PFS etc.) 2. Narrow band filters (HSC etc.) 2016/11：Director of Subaru telescope and Subaru SAC、 agreed to the Commitment
２．Contribution to Coronagraph Instrument ・Polarimetry capability ・coronagraph2020/03 mask substratesJAXA-NASA LOA signed. ３．Ka-band Data Downlink Station in Japan
４．Ground base microlensing data sharing（MOA） pre/concurrent Ground microlensing obs. with new 1.8m (PRIME) telescope JAXA Roman team members joined to SIT
Roman 24 SIT member,、10 Domestic member 1. “COSMOLOGY WITH THE WFIRST HIGH LATITUDE SURVEY” (Chair: Olivier Dore ) Masahiro Takada (U.tokyo, IPMU), Hironao Miyatake (Nagoya U.), Tomomi Sunayama(Nagoya U.) 2. “OPTIMIZING THE WFIRST TYPE IA SUPERNOVA SURVEY” (Ryan Foley) Naoki Yasuda (U.tokyo, IPMU) Takashi Moriya (NAOJ),Yuji Urata (National Central University, Taipei) 3. "INVESTIGATING THE NATURE OF DARK ENERGY USING TYPE IA SUPERNOVAE WITH WFIRST-AFTA SPACE MISSION” (Saul Perlmutter) Nao Suzuki (U.tokyo, IPMU), Tomoki Morokuma (U.Tokyo, IoA) ------Exoplanet Microlensing 4. "PREPARING FOR THE WFIRST MICROLENSING SURVEY: SIMULATIONS, REQUIREMENTS, SURVEY STRATEGIES, AND PRECURSOR OBSERVATIONS” (Scott Gaudi) Takahiro Sumi (Osaka U.), Daisuke Suzuki (Osaka U.), Naoki Koshimoto (U.Tokyo), Kento Masuda (Osaka U.) ------Exoplanet Coronagraphs 5. “ OPTIMIZING WFIRST CORONAGRAPH SCIENCE”(Bruce Macintosh) Motohide Tamura (U. Tokyo/ABC), Taichi Uyama(Caltech/IPAC), Naoshi Murakami (Hokkaido U.) 6. "HARNESSING THE POWER OF THE WFIRST-CORONAGRAPH: A COORDINATED PLAN FOR EXOPLANET AND DISK SCIENCE”(Margaret Turnbull ) Taro Matsuo (Nagoya U.), Satoshi Ito(ISAS/JAXA) ------Guest Investigator (GI)/Guest Observer (GO) science 7. "WFIRST EXTRAGALACTIC POTENTIAL OBSERVATIONS (EXPO) SCIENCE INVESTIGATION TEAM” (Brant Robertson) Tadayuki Kodama (Tohoku U.), Takashi Moriya (NAOJ) Kimihiko Nakajima (NAOJ), Rhythm Shimakawa （NAOJ）
8. “WINGS: WFIRST INFRARED NEARBY GALAXY SURVEY” (Benjamin Williams) Masayuki Tanaka (NAOJ),Sakurako Okamoto (NAOJ)
9.“ARCHIVAL RESEARCH CAPABILITIES OF THE WFIRST DATA SET “(Alexander Szalay) Yusei Koyama (NAOJ) , Hisanori Furusawa(NAOJ),Masao Hayashi (NAOJ/Subaru), Tsuyoshi Terai (NAOJ/Subaru) 10.“COSMIC DAWN WITH WFIRST” (James Rhoads) Masami Ouchi (U. Tokyo, ICRR/NAOJ) Yuichi Harikane (NAOJ/UCL), Daisuke Yonetoku (Kanazawa U.) Masafusa Onoue（MPIA） 11. “RESOLVING THE MILKY WAY WITH WFIRST” (Jason KaliraiàJason Tumlison) Noriyuki Matsunaga (U.Tokyo IoA) Shogo Nishiyama (Miyagi Kyoiu U), Riku Urago (Kagoshima U.) The activities continue with New science teams Expected timeline. YEAR 2017 1st Workshop Collecting ideas, broad interest
2018 2nd Workshop Possible programs è summarized in WP 2019 3rd Workshop as a session in Possible programs in various Subaru 20th Meeting different science fields 2020 Preliminary proposal development of preliminary development ‘candidate programs’ 2021 4th Workshop NASA Roman Science Team(s) Solicitation 2022 TBD Consolidating the Program Front-loading program?
2023 TBD Proposal Planning, Teaming
2024 TBD Final Proposal Submission The proposal of the consolidated program will be reviewed by Subaru Advisory Committee 2025 TBD Scheduling White Paper of Synergistic observation Enabling Breakthrough Science with the Subaru EnablingTelescope Breakthroughand the Wide Field Science Infrared Surveywith the Telescope Subaru Telescope(WFIRST): and A White the paperWide forField Subaru Infrared and WFIRST Survey Communities Telescope (WFIRST): A White paper for Subaru April 25, 2019 2019/4/25 andEditors: WFIRST Jason Rhodes1 (Jet CommunitiesPropulsion Laboratory, California Institute of Technology), Takahiro Sumi2 (Osaka University)
AlsoContents submitted to: US Decal survey Principal1. Executive EditorsSummary ...... : Jason Rhodes,...... T.Sumi...... 1 Executive2. Mission Capabilities Summary ...... : D. Spergel...... , T. Yamada...... 2 3. Exoplanet Microlensing...... 5 4. Coronagraph Instrument (CGI) Support ...... 8 http://www.ir.isas.jaxa.jp/WFIRST_Subaru_II/TALKS/WFI 5. Supernovae and Time Domain ...... 10 RST_Subaru_April25.pdf6. Deep Fields ...... 12 User7. Cosmology Name: ...... wfirst ...... 17 Password:8. Nearby Galaxies subaru ...... 19 9. Milky Way ...... 21 10. Solar System Science ...... 23 11. General Guest Observer and Investigator Science: Keeping the Door Open to New Discoveries . 25 12. Future Process and Directions ...... 27
1. Executive Summary Authors: David Spergel (Flatiron Institute), Toru Yamada (JAXA)
The combination of joint WFIRST/Subaru observations have the potential to enable transformative science that cannot be done by either telescope alone. WFIRST will image the near-infrared sky to unprecedented depth and area. Subaru, with its wide field and unique instruments for both imaging and spectroscopy, is a superb complement. WFIRST and Subaru will also both be deploying cutting edge coronagraphic instruments.
1 [email protected] 2 [email protected] © 2019. All rights reserved. Required nights and conditions in WP2019. Category/Topic Instrumen N req. condi t tion l Total required 312 nights is three Microlensing parallax HSC 13.5 Bright times more than reserved 100 nights Microlensing NIR spec. ToO IRD 11.2-15 Bright (100 nights are not enough!) Microlensing NIR concurrent ULTIMATE 3.4 Bright CGI Support SCExAO/ 18 Bright l 78% of required time is in Dark night CHARIS with HSC/PFS. CGI Support /Doppler IRD 7 Bright l Several programs have overlapping. SNe Follow-up PFS 25 Dark SNe Live Spectroscopy PFS 20 Dark Should be Combined/shared. Deep Field Ultra-Deep HSC 33 Dark l Completion of the PFS Subaru Deep Field SNe Fields HSC 8 Dark Strategic Program (SSP: a large Imaging Deep Field SNe Fields PFS 8 Dark program up to 360 night) is delayed Spectra to 2027. Most of Dark nights will be Deep Field SNe Fields NB HSC/PFS 6-10 Dark available after this. Cosmology sp redshift calib. PFS 25-50 Dark Cosmology IB redshift calib. HSC 60 Dark l Due to the fact that PFS-SSP is Nearby Galaxies Pre-im. HSC 10 Dark expected to start in 2023A and last Halo until 27B, Dark nights with HSC will Milky Way Bulge HV PFS/ULTI 4.5 Dark MATE be relatively more available in 2022 Milky Way Bulge stars IRD 15 Bright (A,B) before SSP starts. Solar System TNO HSC 6 Dark l front-loading of a part of our Subaru- Solar System Minor Body/Irr HSC 10 Dark Irregular Satellites HSC 6 Dark Roman Synergistic program in this total 321.4 time slot may be worth considering. front-loading of a part of our Subaru-Roman Synergistic program in this time slot may be worth considering
There is time constraint….
2021/2/17-18 This WS 2021/2/19 Subaru SAC 2021/3/3-5 Subaru Users Meeting (we are here) 5 March 10:30 - 11:10 Subaru & Roman Space Telescope 2021/Fall submit proposal 2022A,B front-loading observation